Need a left and a right

Hello there!

Thank you for reaching out to us. Your operator resembles the 39-187 and 39-188 models, but your link arm is riveted under the gear arm rather than above it. Please allow me to consult one of our senior experts, and we'll reach back out as soon as we have more information. 

I'm not sure why your operator has the link arm riveted to the bottom of the gear arm. It's possible that the window manufacturer made a special order, or they might have turned the arm upside down and riveted it there. I don’t think this will be an issue. However, please note that you will need to attach the 39-105 detach clip to the top of the link arm to match your setup. I recommend checking out the related hardware and the videos on casement windows available on the website.